1241978-40-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1241978-40-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,1,9,7 and 8 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1241978-40:
(9*1)+(8*2)+(7*4)+(6*1)+(5*9)+(4*7)+(3*8)+(2*4)+(1*0)=164
164 % 10 = 4
So 1241978-40-4 is a valid CAS Registry Number.